Android – How to avoid execution of onTextChanged in Android’s EditText

androidandroid-edittext

How can I avoid that a code line like:

((EditText) findViewById(R.id.MyEditText)).setText("Hello");

Will cause an event here:

((EditText) findViewById(R.id.MyEditText)).addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start,
    int before, int count) {
// HERE
}

@Override
public void beforeTextChanged(CharSequence s, int start,
    int count, int after) {
}

@Override
public void afterTextChanged(Editable s) {
}
});

I want to know if there is any way to inhibit the execution of onTextChanged as I noticed in the case of selecting a AutoCompleteTextView's dropdown result (no onTextChanged is executed!).

I'm not seeking for workarounds like "if hello do nothing"…

Best Answer

The Source for AutoCompleteTextView shows that they set a boolean to say the text is being replaced by the block completion

         mBlockCompletion = true;
         replaceText(convertSelectionToString(selectedItem));
         mBlockCompletion = false;

This is as good a way as any to achieve what you want to do. The TextWatcher then checks to to see if the setText has come via a completion and returns out of the method

 void doBeforeTextChanged() {
     if (mBlockCompletion) return;

Adding and removing the TextWatcher will be more time consuming for the application

Related Solutions

Android – How to stop EditText from gaining focus at Activity startup in Android

Excellent answers from Luc and Mark. However, a good code sample is missing. Adding the tags android:focusableInTouchMode="true" and android:focusable="true" to the parent layout (e.g. LinearLayout or ConstraintLayout) like in the following example, will fix the problem.

<!-- Dummy item to prevent AutoCompleteTextView from receiving focus -->
<LinearLayout
    android:focusable="true" 
    android:focusableInTouchMode="true"
    android:layout_width="0px" 
    android:layout_height="0px"/>

<!-- :nextFocusUp and :nextFocusLeft have been set to the id of this component
to prevent the dummy from receiving focus again -->
<AutoCompleteTextView android:id="@+id/autotext"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:nextFocusUp="@id/autotext" 
    android:nextFocusLeft="@id/autotext"/>

Android – How to open a URL in Android’s web browser from the application

Try this:

Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"));
startActivity(browserIntent);

That works fine for me.

As for the missing "http://" I'd just do something like this:

if (!url.startsWith("http://") && !url.startsWith("https://"))
   url = "http://" + url;

I would also probably pre-populate your EditText that the user is typing a URL in with "http://".

Best Answer

Related Solutions

Android – How to stop EditText from gaining focus at Activity startup in Android

Android – How to open a URL in Android’s web browser from the application

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